David Keirsey's famous for his view that splitting Myers' 16 types into NFs, NTs, SJs and SPs creates four groups that each has characteristics in common (and differs from the other three groups) to an extent that significantly exceeds the other possible two-letter groupings.
As further discussed in this post, Keirsey really started out as (and largely remained, at least through PUM II) an MBTI guy, but liked to frame his famous foursome as if it also carried on a grand, historical four-type tradition. But the purported match-ups he pointed to between his MBTI-based types and various older foursomes were often pretty strained.
I've long thought that the right way to read Keirsey is as a guy who had a lot of good insights into the MBTI types (and a talent for bringing them to life on the page) — including interesting (although not always correct) things to say about his favored two-letter combinations — but without buying into his view that there was something truly fundamental about the NF/NT/SJ/SP carve-up.
Isabel Myers was a big believer that there were lots of noteworthy aspects of personality associated with combinations of preferences, and the 1985 MBTI Manual (which she co-authored) included brief descriptions of every possible two-letter combination. But NF/NT/ST/SF was Myers' favored foursome, and I can't resist noting that it's a carve-up of the types that totally ignores the so-called "cognitive functions." (Each of Myers' four groups consists of types with four different dominant functions.)
Myers explained why she thought NF/NT/ST/SF was the most meaningful way to group the types in Gifts Differing. She said:
Which brings me to a little study that I haz just performed...
The official MBTI folks put out Career Reports that show the popularity for each type of "22 broad occupational categories," based on "a sample of more than 92,000 people in 282 jobs who said they were satisfied with their jobs." That's a large freaking sample by personality typology standards, and it included 5,830 ISFJs, 11,410 ISTJs, 3,230 ISFPs, 5,114 ESTPs, 4,321 ESFPs and 12,019 ESTJs.
To give you an indication of the nature of the stats, here are the "Most Attractive Job Families" (job satisfaction scores of 60-100) for the ESFPs:
ESFPs
Health Care Support [100]
—Nurse's aide, veterinary assistant, pharmacy aide, physical therapy aide
Food Preparation and Service [99]
—Chef, food service manager, bartender, host/hostess
Personal Care and Service [91]
—Lodging manager, personal trainer, hairdresser, child care provider
Office and Administrative Support [70]
—Bank teller, receptionist, clerical services, legal secretary
Sales and Advertising [62]
—Sales manager, real estate agent, insurance agent, salesperson
Building and Grounds Maintenance [60]
—Gardener, tree trimmer, housekeeping, lawn service supervisor
And again, there are 22 categories in all.
I don't have a full set of those Career Report stats, but I have them for the six S types previously mentioned, and it occurred to me to wonder whether the occupational preferences of SJs tend to be more alike than the occupational preferences of STs (as Keirsey's perspective would arguably lead you to believe) or vice versa (more in line with Myers' perspective).
So I decided to calculate what you might call the total distance between the job choices of those six S types by totaling the 22 differences in job satisfaction ratings. And here are the results:
ISFJ vs. ISTJ (both SJs): 737
ISFJ vs. ISFP (both SFs): 337
ESTP vs. ESFP (both SPs): 659
ESTP vs. ESTJ (both STs): 375
In both cases the results favor Myers' perspective — that ST/SF is a more meaningful way to group the S's than SJ/SP — and by a very wide margin.
And noooooooooooo, I'm not saying this disproves the fundamentality of Keirsey's temperaments by any means, but I am saying I consider those results some serious food for thought. Career choices are a big part of a person's life — not to mention an aspect of life that Myers and Keirsey both thought (consistent with decades of data) tends to be substantially influenced by your type — and 92,000 is a huge sample, and those ST/SF-vs.-SJ/SP results are dramatically lopsided.
My perspective continues to be that it's probably a mistake to put too much emphasis on any particular grouping of the 16 types, including Myers'. As reflected in the MBTI Manual, I assume there are probably noteworthy and insightful things to be said about each of the possible two-letter combinations.
And in that regard, and as a final note, I can't resist mentioning that, although I agree that I have some significant things in common with my fellow NTs, I've increasingly come around to the view that, if I had to pick a group of four MBTI types to really be my "kindred spirits" group, it would be the INs rather than the NTs. And anybody's who's interested can read more about that in the spoiler.
As further discussed in this post, Keirsey really started out as (and largely remained, at least through PUM II) an MBTI guy, but liked to frame his famous foursome as if it also carried on a grand, historical four-type tradition. But the purported match-ups he pointed to between his MBTI-based types and various older foursomes were often pretty strained.
I've long thought that the right way to read Keirsey is as a guy who had a lot of good insights into the MBTI types (and a talent for bringing them to life on the page) — including interesting (although not always correct) things to say about his favored two-letter combinations — but without buying into his view that there was something truly fundamental about the NF/NT/SJ/SP carve-up.
Isabel Myers was a big believer that there were lots of noteworthy aspects of personality associated with combinations of preferences, and the 1985 MBTI Manual (which she co-authored) included brief descriptions of every possible two-letter combination. But NF/NT/ST/SF was Myers' favored foursome, and I can't resist noting that it's a carve-up of the types that totally ignores the so-called "cognitive functions." (Each of Myers' four groups consists of types with four different dominant functions.)
Myers explained why she thought NF/NT/ST/SF was the most meaningful way to group the types in Gifts Differing. She said:
Keirsey didn't think much of Myers' S groups. In explaining how he got from Myers to NF/NT/SJ/SP, he said:Myers said:
----------------------------------------------------------------Keirsey said:
Which brings me to a little study that I haz just performed...
The official MBTI folks put out Career Reports that show the popularity for each type of "22 broad occupational categories," based on "a sample of more than 92,000 people in 282 jobs who said they were satisfied with their jobs." That's a large freaking sample by personality typology standards, and it included 5,830 ISFJs, 11,410 ISTJs, 3,230 ISFPs, 5,114 ESTPs, 4,321 ESFPs and 12,019 ESTJs.
To give you an indication of the nature of the stats, here are the "Most Attractive Job Families" (job satisfaction scores of 60-100) for the ESFPs:
ESFPs
Health Care Support [100]
—Nurse's aide, veterinary assistant, pharmacy aide, physical therapy aide
Food Preparation and Service [99]
—Chef, food service manager, bartender, host/hostess
Personal Care and Service [91]
—Lodging manager, personal trainer, hairdresser, child care provider
Office and Administrative Support [70]
—Bank teller, receptionist, clerical services, legal secretary
Sales and Advertising [62]
—Sales manager, real estate agent, insurance agent, salesperson
Building and Grounds Maintenance [60]
—Gardener, tree trimmer, housekeeping, lawn service supervisor
And again, there are 22 categories in all.
I don't have a full set of those Career Report stats, but I have them for the six S types previously mentioned, and it occurred to me to wonder whether the occupational preferences of SJs tend to be more alike than the occupational preferences of STs (as Keirsey's perspective would arguably lead you to believe) or vice versa (more in line with Myers' perspective).
So I decided to calculate what you might call the total distance between the job choices of those six S types by totaling the 22 differences in job satisfaction ratings. And here are the results:
ISFJ vs. ISTJ (both SJs): 737
ISFJ vs. ISFP (both SFs): 337
ESTP vs. ESFP (both SPs): 659
ESTP vs. ESTJ (both STs): 375
In both cases the results favor Myers' perspective — that ST/SF is a more meaningful way to group the S's than SJ/SP — and by a very wide margin.
And noooooooooooo, I'm not saying this disproves the fundamentality of Keirsey's temperaments by any means, but I am saying I consider those results some serious food for thought. Career choices are a big part of a person's life — not to mention an aspect of life that Myers and Keirsey both thought (consistent with decades of data) tends to be substantially influenced by your type — and 92,000 is a huge sample, and those ST/SF-vs.-SJ/SP results are dramatically lopsided.
My perspective continues to be that it's probably a mistake to put too much emphasis on any particular grouping of the 16 types, including Myers'. As reflected in the MBTI Manual, I assume there are probably noteworthy and insightful things to be said about each of the possible two-letter combinations.
And in that regard, and as a final note, I can't resist mentioning that, although I agree that I have some significant things in common with my fellow NTs, I've increasingly come around to the view that, if I had to pick a group of four MBTI types to really be my "kindred spirits" group, it would be the INs rather than the NTs. And anybody's who's interested can read more about that in the spoiler.